diff --git a/Readme.md b/Readme.md
index 01cdb12..0fa51b0 100644
--- a/Readme.md
+++ b/Readme.md
@@ -1,4 +1,4 @@
-#Requirement Repositories.
+# Requirement Repositories.
 
 The aim of the NorthStart project is to developp a water purificator machine. The system is devided into several sub system described below.
 
@@ -33,11 +33,25 @@ The DesginRequirements shall be divided in several Packages. Like :
 
 ## Production Unit
 
-The files listed below collect all requirements Related to the Docking Station
+The files listed below collect all requirements Related to the Production Unit 
 * PU\_Features.reqif
 * PU\_DesignRequirements.requif
 * PU\_TestRequirements.reqif
 
+## Common Requirements between the Valve Board and the Conductivity Board
+
 ## Valve Board
 
+The files listed below collect all requirements Related to the Valve Board 
+
+* VB\_Features.reqif
+* VB\_DesignRequirements.requif
+* VB\_TestRequirements.reqif
+
 ## Conductivity Board 
+
+The files listed below collect all requirements Related to the Conductivity Board
+ 
+* CB\_Features.reqif
+* CB\_DesignRequirements.requif
+* CB\_TestRequirements.reqif